Tqdm 是一个快速，可扩展的Python进度条，可以在 Python 长循环中添加一个进度提示信息，用户只需要封装任意的迭代器 tqdm(iterator)。
# 方式一
for i in tqdm(range(10)): # 里面的参数表示总步长
sleep(10)
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# 100%|██████████| 10/10 [01:40<00:00, 10.01s/it]# 方式二
for i in trange(10):
sleep(10)
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# 100%|██████████| 10/10 [01:40<00:00, 10.01s/it]# 方式三：添加注释
pbar = tqdm(["a", "b", "c", "d"])
for char in pbar:
sleep(10)
pbar.set_description("Processing %s" % char)
# Processing a: 25%|██▌ | 1/4 [00:10<00:30, 10.01s/it]
# Processing b: 50%|█████ | 2/4 [00:20<00:20, 10.01s/it]
# Processing c: 75%|███████▌ | 3/4 [00:30<00:10, 10.01s/it]
# Processing d: 100%|██████████| 4/4 [00:40<00:00, 10.01s/it]# 方式四：设置总步长和单次更新步长
with tqdm(total=100) as pbar:#total表示总步长
for i in range(10):
sleep(3)
pbar.update(10)#设置每次更新的进度步长
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# 100%|██████████| 100/100 [01:40<00:00, 1.00s/it]# 方式五：方式四的变形
pbar = tqdm(total=100)
for i in range(10):
sleep(10)
pbar.update(10)
pbar.close()
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